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Eliminate the last (direct) use of vm_page_lookup() on the pte object.

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This commit is contained in:
Alan Cox 2003-08-22 05:49:29 +00:00
parent e1dca0e939
commit 3c5a69f7d0
1 changed files with 4 additions and 8 deletions
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12
sys/i386/i386/pmap.c
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@ -1024,19 +1024,15 @@ static int
pmap_unuse_pt(pmap_t pmap, vm_offset_t va, vm_page_t mpte)
{
unsigned ptepindex;
pd_entry_t ptepa;
if (va >= VM_MAXUSER_ADDRESS)
return 0;
if (mpte == NULL) {
ptepindex = (va >> PDRSHIFT);
if (pmap->pm_pteobj->root &&
(pmap->pm_pteobj->root->pindex == ptepindex)) {
mpte = pmap->pm_pteobj->root;
} else {
while ((mpte = vm_page_lookup(pmap->pm_pteobj, ptepindex)) != NULL &&
vm_page_sleep_if_busy(mpte, FALSE, "pulook"))
vm_page_lock_queues();
}
ptepa = pmap->pm_pdir[ptepindex];
mpte = PHYS_TO_VM_PAGE(ptepa);
}
return pmap_unwire_pte_hold(pmap, mpte);